Apparatus for forging wheels.



J. M HANSEN. APPARATUS FOR FORGING WHEELS.

APPLICATION FILED MAY19.1,906.

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J. M.H ANSBN APPARATUS FOR FORGING WHEELS.

API LIOAT I'ION FiLBD MAY 19. 1906.

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- To all whom it'may concern: I

apparatus suitable for the piactice of the methods fl ination of three sets of male and female dies by which I a bowl-shaped or concavo-convex blank is first proform, the hub is developed by an upsetting operation adapted for the practice of the method set forth in said shown in Figs. 5 and 6, and those shown in Figs. 7 and 8, are adapted to be used in succession, and com- UNITED STATES, PATENT OFFICE.

JOHN MIHANSEN, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO FORGED STEEL WHEEL vCOMPANY, OF PITTSBURG, PENNSYLVANIA,'A CORPORATION OF PENNSYLVANIA.

APPARATUS FORv FORGING I Specification of Letters Patent.

Patented Sept. 17, 1907.

llpplication filed May 19,1903. Serial No. 817,737.

Beit known that I, .T min M. HANSEN, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Forging Wheels; and I do hereby declare the following to be a full, clear, and

My invention relates to apparatus for forging steel car wheels and the like, and its object is to provide apparatus of this character by which the wheels are formed by purely upsetting or compressing action and without the production of scrap or waste. It involves described in applications filed by me of even-date herewith, Serial Nos. 317,733, 317,736, and 317,738.

The invention comprises, generally stated, a comduceil tlie web portion is thinned and brought to proper and the tread. or flange is compressed and brought to finished shape, said sets of dies decreasing successively in height and increasing in width, as hereaiter described.

In the accompanying drawings Figures 1, 2 and 3 ar vertical sections partly in full lines showing in one form the first set of dies included. in the invention in their several positions in operating upon the blank; Fig. 4 is a top view of the bottom or female die of said Figs. 1-3; Figs. 5 and 6 are vertical sections partly in full lines of the second set of dies; and Figs. 7 and 8 are like views illustrating the third set of dies.

Any suitable dies embpdying the general principles hereafter. described may be employed for the first forging operation, such for example as the dies illustrated in the said method applications Serial Nos. 317,733 and 317,736;

The dies herein illustrated are those more specifically application Serial No. 317,736.

The three setg of dies, viz., those shown in Figs. 1 to 4 operating in combination with the other sets curved web forming floor portion 0 and the central opening 6 through which the piercing mandrel 7 is adapted to be forced in the forming of the blank. The upper male die 2 has the annular curved projcction 8 and the central hub forming cavity 9. These dies operate to bring the blank into bowl-shape and,

form a rudimentary hub. To that end the blank 10,

brought to a proper forging heat is placed upon the die.

In this way it will be seen that the rim portion 11 of the blank is turned upwardly while the web forming portion 12 thereof is substantially thinned and the metal forced centrally in order to aid' in forming the hub. Either during this forging operation, that is,

during the descent of the upper die, or after the descent of the same, the piercing mandrel 7 is moved longitudinally, such as by raising the same so as to pierce the blank and carry the central portion thereof longitudinally of the axis of the blank, so forming a rudimentary hub 13 which is illustrated as turned upwardly within the hub forming cavity 9 of the upper die. The final position of the piercing mandrel is shown in Fig. 3, and, in case that mandrel is not forced upwardly until after the completion of the stroke of the. upper die 2 Fig. 3 also illustrates the position of the dies,'the mandrel and the blank. By this set of dies I thus produce a concave-convex, or substantially bowl-shaped blank with the hub portion developed in rudimentary form.

In the dies shown in Figs. 5 and 6 the rim of this blank is upset so as to develop the tread and flange of the wheel and at the same time-the rudimentary hub portion is also upset, so forming the tread and its flange l4, and completing the hub portion 15. It will be seen thatthese dies are constructed practically as follows: The lower die 16 has the ccntralhub cavity 17 and the inclined web forming or supporting face 18 and beyond the same the annular flange forging recess 19 connected with the web forming face by the annular curved shoulder 20. Within this die is mounted the mandrel 21 illustrated as operated by a ram 22. The upper die 23 has the annular tread forming cavity 24 and within the same the annular curved projection 25 fitting within the cavity of the blank, and Within that the central hub forming cavity 26 above which is the central opening .27 into which the mandrel 2] passes during the forging operation. The annular tread iorglug cavity 24 has the outwardly inclined face 28 and beyond the same the flaring flangc forging face which cooperates with the annular recess 1 9 of the lower die 7 in forging the flange portion of the tread. The blank 30 formed in the dies 1 L03 is preferablyre-heated and placed upon the lower die 16, the mandrel 2l raised through the same and the upper die 23 forced downwardly for tho forging stroke. In this stroke it upsets the rudimentary hub developed in the dies 1 to 3, upsettingitand bringing it to the finished form within the die cavities 17 and 26, and centering the hub with forcing the metal inwardly and then forcing the surplus metal outwardly into the flange forming cavities If? and 29 and forming the flange 31 of the tread.

The finished wheel is produced frornthis blank by the action of the dies shown in Figsr? and 8, it being preferred that these dies operateupon the blank when at a lower temperature so that the blank can be transferred to these dies as shown in Fig. 7. 'This third set of dies isprovided with substantially similar cavities to the second set of dies, the similar parts being marked with the same reference numerals accompanied. by the exponent a. In this set of dies the web is given the desired reverse curve and the tread and flange portions while at a low heat are subjected to heavy compression to further work the metal thereof and produce the desired fiber structure to give high strength and wearing of dies thus cooperating bysomewhat similar forms of die project ions and cavities so that by the three forging slrokcs of thcsc dies :1 complete finished wheel is produccd from a Hat blank.

What I claim is:

I. In :lll]l:ll:llll for forcing car wheels. the combination of lhl'cc sols ol' dies. each set having :1 hub cnvily, an annular rim cavity; andlan annrlar web reducing portion,

2. In apparatus for forging car wheels, the combinationof three sets of dies. one die of each set having an annular web' reducing projection, said projections decreasing in height and increasing in width in the several sets.

3. In apparatus for forging car wheelsj the combination of three sets of dies. each set of dies having a hub cavity, a rim cavity. and an annular web forming portion, the hub cavity of the first set being deeper and narrower than the other sets and the web forming projections decreasing In height and increasing in width in the several sets.

4. In apparatus for forging car wheels, the combination of three sets of dies, each set having a hub cavity and a rim cavity: and an annular web forming portion, the hub cavity in the first set being formed mostly in one of said dies and that of the succeeding set being substantially equal in both of the dies.

5. Apparatus for forging car \vheels. comprising; 11 set of dies having a hub cavity. an annular rim cavity. and an annular-web reducing portion. the hub cavity being mostly in one die. and an eye-forming piercing mandrel arranged to be projected through an opening in theothcr die thereby forcing the displaced metal into the larger hub cavity of the first die.

6. In apparatus for forging car wheelsj'comprlslng 0. pair of dies. one of which is provided with a bowl-shaped cavity having substantially vertical walls. the other die being provided with an annular \veh forming projection. said dies having a rim cavity which is narrow diametrically and dcep axially of the dies. and a web reducing covity which is narrower than the rimcaviiy.

7. Wheel for-min; apparatus comprising a pair of dies, one .of which is provided with a howl-shaped cavity hnvinc, substantially vertical walls and hnvin: a central open in therein. and the other die being provided with a central bub cavity and a deep annular \vcb foriniu: projection surrounding the same. and n separately operated piercing mandrel arranged to be projedted through the opening in the first named die 8. In apparatus for forging car wheels. the combination of three sets of dies. each set having a hub cavity. an annulur rim cavity and an annular \v cb reducing portion. the rim cavity of the first set'heln; deeper and narrower than the other sets and the web forming projections decreasing in height and incl-casino; in width in the several sets. each sol o1 dies beingprovided with a central opening. an eye piercing punch \vorkin; through the opening of the first set. and :1 mandrel "working through the opening of each succeeding sel.

In testimony whereof. I the said .lonx M. IIAN. hereunto set my hand.

1i have 

